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| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2016-04-21 12:04:42 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-28 22:19:49 -0700 |
| commit | 7101711ee4706915380bdd103902e864380a6987 (patch) | |
| tree | ce1b34ec9a586936db104e0308987e8e5c1c2c72 /drivers/staging/comedi | |
| parent | ba5c0da886c5f75f3bf7cab2f1f23a9ba05e04a5 (diff) | |
| download | blackbird-op-linux-7101711ee4706915380bdd103902e864380a6987.tar.gz blackbird-op-linux-7101711ee4706915380bdd103902e864380a6987.zip | |
staging: comedi: ni_mio_common: simplify AI LINKC handling
Simplfy the LINKC handing for the analog input dma by moving it into
the main interrupt handler. This function already hold the spinlock
mite_channel_lock so call mite_sync_dma() directly instead of using
the helper function.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi')
| -rw-r--r-- | drivers/staging/comedi/drivers/ni_mio_common.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c index 6e76c95a1e5c..9df1407a5c9d 100644 --- a/drivers/staging/comedi/drivers/ni_mio_common.c +++ b/drivers/staging/comedi/drivers/ni_mio_common.c @@ -1295,11 +1295,6 @@ static void handle_a_interrupt(struct comedi_device *dev, { struct comedi_cmd *cmd = &s->async->cmd; -#ifdef PCIDMA - if (ai_mite_status & CHSR_LINKC) - ni_sync_ai_dma(dev); -#endif - /* test for all uncommon interrupt events at the same time */ if (status & (NISTC_AI_STATUS1_ERR | NISTC_AI_STATUS1_SC_TC | NISTC_AI_STATUS1_START1)) { @@ -5166,9 +5161,12 @@ static irqreturn_t ni_E_interrupt(int irq, void *d) unsigned int m_status; spin_lock_irqsave(&devpriv->mite_channel_lock, flags_too); - if (s_ai && devpriv->ai_mite_chan) + if (s_ai && devpriv->ai_mite_chan) { ai_mite_status = mite_ack_linkc(devpriv->ai_mite_chan, s_ai); + if (ai_mite_status & CHSR_LINKC) + mite_sync_dma(devpriv->ai_mite_chan, s_ai); + } if (s_ao && devpriv->ao_mite_chan) { m_status = mite_ack_linkc(devpriv->ao_mite_chan, s_ao); |
